Machine for heading porcelain tubes and the like



m /M .l 5 K E m n M m t I G, CM 9., C. Mm ,wf L n m 3 1 w. m m m 3 Qt! TD N A N. m 2. INU U MW d T l N m 4. O m h wm. s m w 1 /f m m m mm :o G.w ,G m om o A. r xm. |.|.|H\.H. A m O. Q 1 R M A\\ QNY m, Sv W v O. O Oo m O mmv N l m m Sw. N Nf/ D w 9 M @Y (IJ 1l.. mz. 9 EIC Q10; MVN I.\M\\\ am.. wlw. |Ww| Nw ct. 23, l923.

A. G. MASON ET AL MACHINE FOR HEADING PORCELAIN TUBES AND THE LIKE FiledMarch 4. y1922 1 i. wm m W wk yyfuwwm M Nw hX xw i NV| wr@ M R W mw dwswmwm\\ M .4,

lll .11?

@QL 23, 19m mmm? A. G. MASON ET Al.

MACHINE FOR HEADING PORCELAIN TUBES AND THE LIKE Filed March 4. 1922 3Sheets-Sheet 3 mvENroRS #7X/ BERT G. MM50/v LORENZO CLB ucKLE fATTORNEYS Patented @et 23, 1923.

Uhlllvll@ STATES PATENT @FFHCM ALBERT G. IVIASON .AND LORENZ@ C.BUCKLEY, OF LISBON, OHIO, ASSIGNORS 'IO THE R. THOMAS @n SONS COMPANY,OF EAST LIVERPOOL, OHIO, 'A CORPORATION OF OHIO.

MACHINE FOR HEADING PORCELAIN TUBES AND THE LIKE.

Application filed March 4, 1922.

Our invention relates to machines for.

heading porcelain tubes and the like. rIhe object ot our invention is toprovide a machine tor this purpose which is automatic and rapid in itsoperation, and involves no hazard to the attendant.

In the accompanying drawings- Fig. 1 is a broken side elevation oi amachine in which our invention is embodied in one form;

Fig. 2 is a similar view showing the machine in another position;

Fig. 3 is an enlarged side elevation of the die portion of the machinedrawn to a larger scale, and illustrating the position of the parts justin advance ot the heading operation;

Fig. 4 is asimilar view showing the position of the parts on completionoi the heading` operation;

Fig. 5 is a plan of the machine on the scale used in 1;

6 is an enlarged section on the line 6 6, Fig. 1;

Fig. 7 is a section on the line 7-7, Fig. 6; and

Fig. 8 is a perspective of the finished tube.

The apparatus: is susceptible to various modifications in details ofconstruction and arrangement ot parts, and that shown is merely anillustrative embodiment of the un-v derlying features of the invention.`Als shown, it comprises a skeleton table or bed 10 supported onstandards 11 and 12, to which it may be secured in any suitable way. asby bolts 13. Mounted in iiXed position and spaced apart on the bed 10are oppositcly faced dies 14 and 15 having their remote ends cupped at16 and 17 respectively. Cooperating therewith are reciprocatory formingdies 18 and 19, the taces 20 ot which are shaped to complement theshaped ends of the stationary dies 14 and 15 to form the heads 21 of thetube blanks 22. The stationary dies 14 and 15 are longitudinally SerialNo. 541,250.

The forming dies 18 and 19 are provided i with base flanges 25 and 26,by which they are bolted to slide bars 27 and 28. The base flanges areextended outwardly to rest on the longitudinals of the bed 10 and assistin supporting the slides thereon. Recipro eating motion is imparted tothe dies 18 and 19 from the driving shaft 29 through the crank arm 30and link 31 connected at one end to the crank arm, and at the other endto a downwardly extending bracket 32v at one end of the slide. Theshafts 29' may be driven in any suitable fashion, as by means of apulley 33 and driving belt 34. The stroke of the slide is of a lengthprede termined with respect to the fixed dies 14 and 15, which may beadjustably secured on the bed 10 by means ont their clamping bolts 35 insuch position that at the ends of the slide strokes in oppositedirections, one or the other. ot the forming dies is brought intojuxtaposition to its cooperating iiXed die 14 or15, to form a head onthe tube blank.

Associated with the .die pairs 14-18 and 1519 are feed tables 36 and 37,each channeled to the shape of a tube blank 22, and so positioned thatit presents the blank with its axis in alignment with the dies. Each ofthe forming dies 18 and 19 is provided with an axially arranged andforwardly extending pick-up pin 38, or 39, adapted, as the forming dietravels toward its cooperating stationary die, to enter the tubularblank on the associated feed table and carry the blank toward and lguideit into the fixed die 14 or 15, as the forming die approaches thelatter.

The feed tables 36 and 37 are arranged between the longitudinals of thebed 10 and are supported below the latter in any suitable manner. Ashere shown each table is carried by a pair of links 40 and 41 pivotediat one end to a trame standard 11 or 12, and at their other ends to thebar 42 or 43 to which the feed table proper is bolted. Cross pins 44 and45 passing through the bars are so located as to limit the upwardmovement ci? the bars 42 and 43, and thus insure the presentation of thetubular blanks thereon .in accurately predetermined position withrespect to the vpick-up pins 38 and 39 of the forming` dies. Springs 46and'47 attached at their upper ends to the bed of the machine, and attheir lower ends tothe bars 42 and 43, tend constantly to lift thetables to feed position. Inasmuch as the tables lie in the path of themovable dies, cam e2;-v

the feed tables by hand, an automatic de livery thereto is preferred.Any suitable trip device for this purpose may be employed. As hereshown, we have associated with each table a hopper chute 52 and 53 inwhich the tube blanks 22 may be placed by hand or automatically. At itslower end each hopper or chute has associated therewith a tripcomprising a pairof detaining; lingers 54 movable toward and away fromthe stationary delivery apron 55 at the lower end of the chute'. Thelingers 54 are pivoted at 56 and 57 to crank arms 58 and 59 secured to aspindle 60. At one end of the latter is arranged a spring 6l by whichthe spindle 60 is normally held in a position to retract the finfgers 54into engagement with. the tube blank at the lower end of the chute. Atits opposite end the spindle carries a trip lun' 62 adapted to be enrgag'ed by a pawl 63 pivoted on a stud 64 on a. bracket 65 secured to.the movable-die 18 or 19. A spring 66 permits the pawl to yield on theworking travel of the die. but presents the cam end 67 of the pawl inposition to ene'aee the side of the trip lua 62 on the spindle 60, andthus to oscillate the latter sufficiently to lift the detaining tinsrers54 out of engagement with the tube blank. The latter now freed, rollsdown the apron 55 and drops upon the feed table 36 or 37. by which it issupported in position for engagement bv the pick-up pin 29 or 39 on thesucceeding' working 'travel of the die. Stop lues l540 associated withthe detainintr tinfrers 54 rise with the latter and engae'eand hold thetube blank next to that freed. until the return of the tinniers 54 todetaininn` position. when the 60, lues sinkout of stop position and theblanks advance in the `chute.

To forman abutment for the tube blank in thel stationary die during theforming operation. as wellas an automatic discharge i for the tubesafter the-heading operation is completed. a rod 68 is provided. This issupported at its opposite ends in the pas sages 23 and 24 in thestationary diesl4 and l5, and has a diameter substantially corre'-sponding to the latter. Adjustably secured to the rod G8 by set screw'69 is a saddle 70 having' a foot piece 71 adapted to rest freely uponthe slides 27 and 28. @n one or both sides of the saddle and carried bythe foot piece 7l are arranged cushioning springs 72 and 73. Cooperatingwith the saddle 70 are studs 74 and 75 lined on the slide bar 28 andadapted to freely engage one orthe other of .said springs, duringv theworking strokes in opposite directions, to shift the saddle, and thusthe push rod G8, longitudinally in the stationary dies 14 and l5. Thespacing of the stationary dies is such that when one or the other of thestuds 74 or 7 5 picks up the saddle 7l. the saddle is shifted in thedirection of the working stroke and the rod 68j blank 22 has entered thestationary die 15,.

and the rod 68 has been shifted to the right by the stud 7 5, which inengagement with the end of the spring 72. The saddle 70 has been shiftedto the right and abuts against the tie '14r so that its furthertravel'in this direction is prevented. The stroke of the slides 27 and23 inthe same direction is not vet complete. A slinht further movementin the same direction is necessary to bring the forming die 19 intojuxtaposition to the stationary die l5 to shape they head 21 on thetube. The spring 72 permits the stud 75 to advance duringt this finalportion of the working' stroke, while the rod 68 is held stationary andforms the abutment for the tube 22 during the further advance of the die19. lnasmueh as the tube blank abuts the now stationary rod 63, theforming` die t9 displaces the material at-the opposite enfl of the blankinto the die recesses. and shapes it into the head 2l. (See Fig. 4.) 0nthe workingstroke of the slide in opposite direction. stud 74 picks upthe saddle 70 and forces the rod 63 through die 15 and thus expels theheaded tube 22 therefrom, permittintr it to drop from the` die 15 intoa' receptacle 76 beneath the bed of they machine.

the slide travels toward the right, theblank supported on thetable 37 isengaged by the pick-up pin 39 and forced'from the table as the die 19advances. Simultaneously, the die .18 travelingt to the right trips thefeed mechanism forthe chtite 52 and a blank is fed to the table 48. Asthe die 19 passes over the table 37 it is depressed and the blankpreviously supported thereon is Vnow carried by the pick-up pin 39toward the stationary die 15. As the slide advances, the studv thereonengages the saddle 7() and pushes the latter to the right, thus shittingthe push rod 68 from obstructing position in the channel oi the die 15.The tube blank now enters the die 15 and bears against the end et therod therein as the saddle is halted by the impingement ot the saddle TOagainst the stationary die 14. y The final advance or' the die 19 whilethe inner end of the tube blank 22 rests against the now stationary rod68, forces the outer end ot the tube into the die apertures and shapesthe tube head. On the reverse stroke the vforming die 19 moves away fromthe die 15, while the die 18 picks up the tube blank on the table 36 andadvances it toward the stationary die lil. Simultaneously t-he studTlpicks up the saddle 70 and advances it with the push rod 68 to theleft, thus forcing out the formed tube in the die 15 and clearing theway for the tube blank to enter the stationary die 14. lt is obviousthat the attendant has merely to see to it that the feed chutes 52 and53 are properly lilled with tube blanks, and that the mechanism isworking properly. lnasmuch as the pickup and feed ot the blanks to thedies is automatic, there is no danger of injury to the operator.

Various modifications in detail and arrangement o' parts will readilyoccur to those skilled in the art, which do not depart -from what weclaim as our invention.

We claim- 1. 1n a tube-heading machine, a stationary die, a movable diecooperating therewith, a feed table adapted to support a tube blank insubstantial alignment with said dies, and means associated with themovable die for picking up the blank from said feed table andintroducing it into the stationary die, together with means fordepressing the feed table and holding it depressed during the workingtravel of the movable die.

2. ln a tube-heading machine, a stationary die, a movable diecooperating therewith, a feed table adapted to support a tube blank insubstantial alignment with said dies, and means associated with themovable die tor picking up the blank from said feed table andintroducing it into the stationary die, together with means fordepressing the feed table and holding it depressed during i the workingtravel of the movable die, and means for returning said table to feedposition during the return stroke of the movable die. y

3. ln a tube-heading machine, a pair ot stationary dies, a pair otmovable forming dies cooperating therewith, a reciprocating slide withwhich said movable dies are associated, a plunger working in saidstationary dies, and a lost motion connection between said slide andplunger to shift the latter in the stationary dies to expel a termedtube in one ot the latter while bringing said plunger to positit'on toact as an abutment for the tube blank in the other stationary die,substantially as described.

4. ln a tube-heading machine, a pair of stationary dies, a pair ofmovable forming dies cooperating therewith, a reciprocating slide withwhich said movable dies are associted, a plunger working in saidstationary dies, and a lost motion connection between said slide andplunger to shift the latter in the stationary dies to expel a formedtube in one of the latter while bringing said plunger to posititon toact as an abutment for the tube blank in the other stationary die, saidlost motion connection including a spring cushion permitting motion bythe slide on its working stroke after the plunger has been halted.

5. 1n a tube-heading machine, pair ot spaced stationary dies, a pair ofmovable forming dies cooperating therewith, a plunger working in saidstationary dies, a stop associated with said plunger and engaging saidstationary dies to limit the movement oil the plunger, and meansassociated with the movable dies to reciprocate said plunger,substantially as described.

1n testimony whereot we have signed our names to this specification.

ALBERT Gr. MASON. LORENZO C. BUOKLEY.

